[clang] [llvm] [Serialization] Use stable hash functions (PR #96136)

[Fangrui Song via llvm-commits]

MaskRay wrote:

- [ ]  Clang :: APINotes/module-cache.m
- [ ]  Clang :: Driver/cuda-bindings.cu
- [ ]  Clang :: Driver/cuda-phases.cu
- [ ]  Clang :: Driver/hip-phases.hip
- [ ]  Clang :: Driver/hip-toolchain-no-rdc.hip
- [ ]  Clang :: Driver/openmp-system-arch.c
- [ ]  Clang :: Modules/Rmodule-build.m
- [ ]  Clang :: Modules/context-hash.c
- [ ]  Clang :: Modules/extensions.c
- [ ]  Clang :: Modules/implicit-invalidate-common.c
- [ ]  Clang :: Modules/module-feature.m
- [ ]  Clang :: Modules/module-map-path-hash.cpp
- [ ]  Clang :: Modules/modules-with-same-name.m
- [ ]  Clang :: Modules/prebuilt-implicit-modules.m
- [ ]  Clang :: Modules/shadow.m
- [ ]  Clang :: Modules/system-out-of-date-test.m
- [ ]  Clang :: Modules/warn-unused-local-typedef.cpp
- [ ]  Clang :: VFS/module-header-mismatches.m
- [ ]  Clang :: VFS/module_missing_vfs.m


https://github.com/llvm/llvm-project/pull/96136